Anatomy Of The Shoulder And Upper Arm

Front 1

Origin of the Pec Major

Back 1

Clavicular head: anterior surface of the medial half of the clavicle

Sternocostal head: anterior surface of the sternum, superior 6 costal cartilages, apopneurosis of external oblique

Front 2

Insertion of Pec Major

Back 2

Lateral lip of intertubercular sulcus of humerus

Front 3

Innervation of Pec Major

Back 3

Lateral and medial nerves
Clavicular head: C5, *C6
Sternocostal head: *C7, *C8, T1

Front 4

Main action of Pec Major

Back 4

Adducts and medically rotates humerus, draws scapula inferiority and anteriorly.
Clavicular head: flexes humerus
Sternocostal head: extends humerus

Front 5

Origin of Pec Minor

Back 5

3rd-5th ribs near costal cartilage

Front 6

Insertion of Pec Minor

Back 6

Medial border and superior surface of coracoid process of scapula

Front 7

Innervation of Pec Minor

Back 7

Medial pectoral nerve
C8, T1

Front 8

Main action of Pec Minor

Back 8

Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall

Front 9

Origin of the serratus anterior

Back 9

External surfaces of lateral parts of 1st-8th ribs

Front 10

Insertion of the serratus anterior

Back 10

Anterior surface of medial border of scapula

Front 11

Trapezius action

Back 11

Descending part elevates scapula
Ascending part depresses scapula
Middle part retracts scapula

Descending and ascending together rotate glenoid cavity superiorly

Front 12

Latissimus Dorsi origin

Back 12

Spinous process of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs

Front 13

Origin of subclaviusinsertion

Back 13

Junction of 1st rib and it's costal cartilage

Front 14

Insertion of subclavius

Back 14

Inferior surface of middle third clavicle

Front 15

Latissimus Dorsi action

Back 15

Extends, Adducts, and medially rotates humerus

Front 16

Levator Scapulae origin

Back 16

Posterior turbercules of transverse processes of C1-C4

Front 17

Trapezius origin

Back 17

Medial third of superior nuchal line, external occipital protuberance, nuchal ligament, spinous process of C7-T12

Front 18

Trapezius insertion

Back 18

Lateral third if clavicle, acromion and spine of scapula

Front 19

Levator Scapulae action

Back 19

Elevates scapula and rotates it's glenoid cavity inferiorly by rotating scapula

Front 20

Insertion of the serratus anterior

Back 20

Anterior surface of medial border of scapula

Front 21

Latissimus Dorsi origin

Back 21

Spinous process of inferior 6 thoracic vertebrae, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs

Front 22

Latissimus Dorsi insertion

Back 22

Floor of intertubercular sulcus of humerus

Front 23

Rhomboid major/minor innervation

Back 23

Dorsal scapular nerve *C5, C4

Front 24

Rhomboid major/minor action

Back 24

Retracts scapula, rotates glenoid cavity inferiorly, fixes to thoracic wall

Front 25

Levator Scapulae origin

Back 25

Posterior turbercules of transverse processes of C1-C4

Front 26

Levatir Scapulae insertion

Back 26

Medial border of the superior angle of the scapula to the root of scapulae spine

Front 27

Innervation of serratus anterior

Back 27

Long thoracic nerve, C5, *C6, *C7

Front 28

Main action of serratus anterior

Back 28

Protects scapula and holds it against thoracic wall, rotates scapula

Front 29

Rhomboid Minor Orign

Back 29

Nuchal ligament, spinous process of C7-T1

Front 30

Rhomboid minor insertion

Back 30

Medial side of scapula by spine root

Front 31

Innervation of subclavius

Back 31

Nerve to subclavius, *C5, C6

Front 32

Main action of subclavius

Back 32

Anchors and depresses clavicle

Front 33

Rhomboid Major origin

Back 33

Spinous process of T2-T5

Front 34

Rhomboid major insertion

Back 34

Medial border of scapula from spine to inferior angle

Front 35

Origin of deltoid

Back 35

Lateral third of clavicle, acromion and spine of scapula

Front 36

Insertion of deltoid

Back 36

Deltoid tuberosity of humerus

Front 37

Innervation of deltoid

Back 37

Axillary nerve *C5 C6

Front 38

Teres Minor origin

Back 38

Middle part if lateral border of scapula

Front 39

Supraspinatus origin

Back 39

Supraspinatus fossa of scapula

Front 40

Supraspinatus insertion

Back 40

Superior facet of greater tubercle of humerus

Front 41

Action of teres minor

Back 41

Laterally rotates arm, rotator cuff

Front 42

Teres major origin

Back 42

Posterior surface of inferior angle of scapula

Front 43

Infraspinatus origin

Back 43

Infraspinous fossa of scapula

Front 44

Insertion of infraspinatus

Back 44

Middle facet of greater tubercle of humerus

Front 45

Action of teres major

Back 45

Adducts and medially rotates arm

Front 46

Subscapularis origin

Back 46

Subscapular fossa on anterior surface of scapula

Front 47

Teres Minor origin

Back 47

Middle part if lateral border of scapula

Front 48

Teres minor insertion

Back 48

Inferior facet of greater tubercle of humerus

Front 49

Innervation of subscapularis

Back 49

Upper and lower subscapular nerves C5, *C6, C7

Front 50

Action of subscapularis

Back 50

Medially rotates arm, rotator cuff, helps hold head of humerus in glenoid cavity

Front 51

Teres major origin

Back 51

Posterior surface of inferior angle of scapula

Front 52

Teres major insertion

Back 52

Medial lip of intertubercular sulcus of humerus

Front 53

Supraspinatus insertion

Back 53

Superior facet of greater tubercle of humerus

Front 54

Innervation of supraspinatus

Back 54

Suprascapular nerve C4 *C5 C6

Front 55

Subscapularis origin

Back 55

Subscapular fossa on anterior surface of scapula

Front 56

Subscapularis insertion

Back 56

Lesser tubercule of humerus

Front 57

Insertion of infraspinatus

Back 57

Middle facet of greater tubercle of humerus

Front 58

Innervation of infraspinatus

Back 58

Suprascapular nerve *C5, C6

Front 59

Action of infraspinatus

Back 59

Laterally rotates arm, rotator cuff muscle

Front 60

Origin of Biceps Brachii

Back 60

long head: supraglenoid tubercle of scapula

short head: tip of coracoid process

Front 61

Insertion of Biceps Brachii

Back 61

radial tuberosity and apopneurosis of flexor muscles of lower arm

Front 62

Action of bicep

Back 62

flexes and supinates the forearm

Front 63

innervation of bicep

Back 63

musculocutaneous nerve (C5, *C6, C7)

Front 64

origin coracobrachialis

Back 64

tip of coracoid process

Front 65

insertion of coracobrachialis

Back 65

anteromedial surface of humerus shaft

Front 66

action of coracobrachialis

Back 66

flexion and adduction of humerus

Front 67

innervation of coracobrachialis

Back 67

musculocutaneous nerve (C5-C7)

Front 68

origin of the brachialis

Back 68

distal half of anterior surface of humerus

Front 69

insertion of the brachialis

Back 69

coranoid process and tuberosity of ulna

Front 70

action of the brachialis

Back 70

flexes humerus

Front 71

innervation of the brachialis

Back 71

musculocutaneous and radial nerve (C5, C6)

Front 72

origin of the tricep

Back 72

long head: infraglenoid tubercle of scapula

medial: distal two thirds of medial and posterior surface of humerus

lateral: upper half of posterior surface of humerus

Front 73

insertion of tricep

Back 73

posterior surface of the olecranon process of ulna

Front 74

action of tricep

Back 74

extends the forearm and the tendon of the long head, helps stabilize the shoulder joint

Front 75

innervation of tricep

Back 75

radial nerve (C6, C7, C8)

Front 76

origin of the anconeous

Back 76

posterior surface of the lateral epicondyle of humerus

Front 77

insertion of the anconeus

Back 77

lateral surface of the olecranon process and posterior proximal surface of ulna

Front 78

action of anconeus

Back 78

extends forearm and stabilizes the elbow joint

Front 79

innervation of anconeus

Back 79

radial nerve (C6-C8)